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-Structure paper
| Title | Structures of rotary ATP synthase from during proton powered ATP synthesis. |
|---|---|
| Journal, issue, pages | Sci Adv, Vol. 11, Issue 42, Page eadx8771, Year 2025 |
| Publish date | Oct 17, 2025 |
Authors | Atsuki Nakano / Jun-Ichi Kishikawa / Nishida Yui / Kyosuke Sugawara / Yuto Kan / Christoph Gerle / Hideki Shigematsu / Kaoru Mitsuoka / Ken Yokoyama / ![]() |
| PubMed Abstract | ATP synthases are rotary molecular machines that use the proton motive force to rotate the central rotor complex relative to the surrounding stator apparatus, thereby coupling the ATP synthesis. We ...ATP synthases are rotary molecular machines that use the proton motive force to rotate the central rotor complex relative to the surrounding stator apparatus, thereby coupling the ATP synthesis. We reconstituted the V/A-ATPase into liposomes and performed structural analysis using cryo-EM under conditions where the proton motive force was applied in the presence of ADP and Pi. ATP molecules were bound at two of the three catalytic sites of V/A-ATPase, confirming that the structure represents a state adopted during ATP synthesis. In this structure, the catalytic site closes upon binding of ADP and Pi through an induced fit mechanism. Multiple structures were obtained where the membrane-embedded rotor ring was in a different position relative to the stator. By comparing these structures, we found that torsion occurs in both the central rotor and the peripheral stator during 31° rotation of rotor ring. These structural snapshots of V/A-ATPase provide crucial insights into the mechanism of rotary catalysis of ATP synthesis. |
External links | Sci Adv / PubMed:41105777 / PubMed Central |
| Methods | EM (single particle) |
| Resolution | 2.2 - 4.67 Å |
| Structure data | EMDB-63904, PDB-9u6f: EMDB-63905, PDB-9u6g: ![]() EMDB-63906: Cryo-EM structure of the V1 domain of V/A-ATPase in liposomes, state2 ![]() EMDB-63907: Cryo-EM structure of the V1 domain of V/A-ATPase in liposomes, state3 EMDB-63908, PDB-9u6h: EMDB-63909, PDB-9u6i: EMDB-63910, PDB-9u6j: EMDB-63911, PDB-9u6k: EMDB-63912, PDB-9u6l: EMDB-63913, PDB-9u6m: EMDB-63914, PDB-9u6n: EMDB-63915, PDB-9u6o: EMDB-63916, PDB-9u6p: ![]() EMDB-63917: Cryo-EM structure of the V1 domain of V/A-ATPase in liposomes under no pmf condition, state2 ![]() EMDB-63918: Cryo-EM structure of the V1 domain of V/A-ATPase in liposomes under no pmf condition, state3 EMDB-63919, PDB-9u6q: EMDB-63922, PDB-9u6t: EMDB-63923, PDB-9u6u: EMDB-63924, PDB-9u6v: EMDB-63925, PDB-9u6w: EMDB-63926, PDB-9u6x: EMDB-63927, PDB-9u6y: ![]() EMDB-63928: Cryo-EM structure of the V1 domain of V/A-ATPase in liposomes under pmf condition,state2 ![]() EMDB-63929: Cryo-EM structure of the Vo domain of V/A-ATPase in liposomes under pmf condition,state1 ![]() EMDB-63930: Cryo-EM structure of the Vo domain of V/A-ATPase in liposomes under pmf condition,state2 |
| Chemicals | ![]() ChemComp-MG: ![]() ChemComp-ADP: ![]() ChemComp-ATP: ![]() ChemComp-HOH: ![]() ChemComp-PO4: |
| Source |
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Keywords | MOTOR PROTEIN / ATP synthase / V ATPase / V1 ATPase |
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thermus thermophilus hb8 (bacteria)
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